F/R S-2

FITTER THEORY SEM II JAN17 QUESTIONS

Which of the following centers is suitable while cutting taper by set over method?
a) Plain centre b) Revolving centre
c) Half centre d) Ball centre

To get least count of 5 in a Vernier bevel protractor, the 23 main scale are divided in to
a) 12 equal parts on a Vernier scale b) 24 equal parts on a Vernier scale
c) 22 equal parts on a Vernier scale d) 25 equal parts on a Vernier scale

Which one of the following statements indicates the principle followed in turning taper by
offsetting the tail stock?
a) The work axis is kept out of alignment with the lathe axis and the tool movement
are parallel to the lathe axis.
b) The work axis is kept in line with the lathe axis and the tool is made to move at an
angle to the lathe axis.
c) The work axis is kept out of alignment with the lathe axis and the tool is made to
move at angle to lathe axis.
d) The live and dead centers are moved in opposite directions to keep the work axis
out of alignment with lathe axis.

Which one of the following methods of catching the threads consume more time when
cutting odd pitch threads?
a) Using thread chasing dial
b) Reversing the machining
c) Predetermined travel of the carriage
d) Marking on work holding device & lead screw.

When power feed is engaged while turning taper using taper turning attachment, it is noticed
that for short distance parallel turning takes place due to certain defect. Which one of the
following is the cause of this defect?
a) The positioning of the T/T attachment is not correct
b) The too setting is not at centre height
c) Work piece is not rigidly held
d) Play between the sliding units

The tail stock barrel has an internal taper, which one of the following standard taper is
provided in the barrel bore..............
a) Metric taper b) Morse taper
c) Jarno taper d) Brown & Sharp taper

A British thread chasing dial has 16 teeth on the worm wheel and the lead screw has 4 threads
per inch. During one full turn of the dil, the carriage will move on the bed to a distance of.................
a) 1 inch b) 4 inches c) 8 inches d) 16 inches

In single start thread................
a) Lead is half the pitch
c) Lead and pitch are equal
b) Lead is double the pitch
d) Pitch is half the Lead

The amount of off set of tail stock for taper turning is done by the offset screws provided. The
procedure to be followed is.........
a) Loosen both screws and push the base to the amount of off set.
b) Loosen both screws and push the body to the amount of off set.
c) Loosen the screws in the direction of movement and tighten the other screw
d) Loosen the screws in the opposite to the direction of movement and tighten the
other screw.

Which one of the following statements does NOT provide the required information for
turning tapers using compound slide swivel method?
a) Big diameter, small diameter and total length of the work piece
b) Big diameter, small diameter and total length of the tapered work piece
c) The taper ratio and total length of the work piece.
d) The included angle and length of taper of the work piece.

Which one of the following elements of an external BSW thread cannot be formed with
single point thread tool during threading?
a) Root b) Helix angle c) Crest d) Thread angle.

While measuring with Vernier bevel protractor, which part is used normally as reference
surface?
a) Stock b) Blade c) Dial d) Disc

Buttress threads are most commonly used for.................
a) Transmission of motion
b) Resisting force exerted in one direction only
c) Positioning of mechanical parts
d) Special bolts & units in structural work

Which one of the following abbreviations is used to specify an ACME thread .............
a)M16 b)Rd20Xl/8" c)s48X8 d)Tr60X9

The reason for NOT providing the rake angle on a form tool used to produce taper on a work
piece is..................
a) To reduce grinding time of the tool
b) Taper angle is not affected by re sharpening
c) To reduce wastage of tool material
d) For the tool to have large wedge angle

One of the precision instruments used to check the dimensional accuracy of an external "V"
thread is a screw thread micrometer, which one of the following elements of screw thread is
checked with this instrument ...........
a) Major diameter b) Minor diameter c) Pitch d) Pitch diameter

One of the methods of aligning lathe centers is trial cut method. The diameter of the tail stock
end is found to be bigger than the head stock end by 0.1 mm after the trail cut to correct the
alignment the tail stock body should be moved by..................
a) 0.10mm away from the operator b) 0,10mm towards the operator
c) 0.05mm away from the operator d) 0.05mm towards the operator

A simple change gear train is used to cut a certain pitch thread. Due to non- availability of 1
required gear from the set, down gear with 3 teem more than that of the calculated value
mounted. The thread that is cut will have a pitch........

a) More for certain length and then less for the remaining thread length.
b) More than that of required for the full threaded length.
c) Less than that of required for the full threaded length
d) Equal to that of required for the full threaded length

While marking with a Vernier height gauge, the workplace is generally:-
a) Supported by another work piece b) Held by hand
c) Supported by an angle plate d) Held without support

While laying out, the Vernier height gauge must be used on the:-
a)Veeblock b) Surface plate
c) Machine bed d) On any flat surface

Which one of the following formula is applied to find the tail stock off set, when turning
tapers by offset method?

Which one of the following instruments is used to measure accurately the angle of taper?
a) Bevel gauge b) Bevel protractor
c) Vernier bevel protractor d) Taper gauge

Which one of the following instruments is used to measure accurately the angle of taper?
a) Bevel gauge b) Bevel protractor
c) Vernier bevel protractor d) Taper gauge

Which one of the following statements is true in respect of taper turning using telescopic type
of taper turning attachment?
a) The tool post is pushed or pulled during axial movement of the saddle
b) The compound slide is pushed or pulled during the axial movement of the saddle
c) The cross slide is pushed or pulled during the axial movement of the saddle
d) The saddle itself is pushed or pulled during the axial movement of the saddle

In thread cutting with chasers on lathe the hand chasers are used for:...............
a) Quick production of threads.
b) Cutting threads on soft metals directly
c) Rectifying threads cut on steel rods which are distorted.
d) Rectifying crest and root of threads formed by single point tool.

A centre gauge is used to..............
a) Check the pitch of the thread
b) Set the tool to exact centre height
c) Check the flank angle of a "V" threading tool
d) Determine the length of cutting edge of the "V" threading tool

Which one of the following methods of joining metals results in the fusion of the parent
metal?
a) Soldering b) Welding c) Brazing d) Riveting

A multi start square thread is to be cut on a lathe with single point tool. Which one of the
following angles of the tool is to be ground by taking into consideration, the thread helix
angle?
a) Side relief b) Front Clarence c) Side rake d) Side clearance

The straight shank drill is held in the main
spindle of drilling machine by..............
A floating holder
B collet
C chuck
D sleeve

The distance a drill advanced into the work
for each revolution is called the............
speed of a drill
depth of a drill
feed of a drill
cutting speed of a drill

What coolant is used for drilling the
aluminium job?
Dry air
Kerosene
Soluble oil
Mineral oil

After threading a hole by a tap, it was found
that the crest of thread was not formed
completely, this defect is due to...........
A insufficient coolant supply
B broken tip of cutting edge of the tap
C hole size slightly less than the tap drill size
D hole size slightly more than the tap drill size

The part of the reamer which allows the
chips to pass and admit the coolant to the
cutting edge is called..........
tang
land
neck
flute

The property of metal by virtue of which they
can be rolled into their sheet without
breaking is called....................
A ductility
B malleability
C toughness
D tenacity

Feeler gauges are used to check
the..................
radii of the given component
gap between the mating parts
particular standard thread pitch
precision length measurement

The most commonly used size of the vernier
height gauge is stated by the height of the
beam is.................
A 275 mm
B 300 mm
C 325 mm
D 350 mm

Three square scraper is used for
scarping.....
A large diameter holes
B bearing surfaces
C small diameter holes
,D large flat surfaces

What is the drill point angle for general
purpose?
118°
B 112°
C 110°
D 108°

The difference between the maximum limit of
size and the minimum limit of size is
called.......
A upper deviation
B lower deviation
C tolerance
D actual size

Which one is a good conductor of heat and
electricity?
copper
lead
steel
aluminium

Name the bond which is used for heavy duty,
large diameter wheels where a fine finish is
required.
A silicate bond
B rubber bond
C vitrified bondD shellac bond
FITTER THEORY SEM II JULY17 QUESTIONS

july 2017 semester-2 fitter theory
Jenny caliper is used to
a) For finding the external of round bar b) For finding the internal round bar
c) For finding the center of round bar d) For finding the angles

While drilling the drill gets overheated this is due to......
a) More lip clearance angle b) Less cutting angle
c) Material being drilled is ductile d) Excessive cutting pressure

Which one of the following elements cannot be checked with the screw pitch gauge
a) Pitch b. Lead
c) Profile d. Depth
Operation for making a seat for bolt head, washer or nut is called
a) Spot facing b- Counter boring
c) Countersinking d. Grooving

Which of the following formula is used for finding the cutting speed of the drill?a) πDN/1000 m/minb) πx1000/DN m/minc) 1000xDxN/π m/min
d) None of these

If there are two flutes in any drill, then the number of cutting edges will be..........
a) Twob) Three c)Fourd) Zero
It is a welding transformer which converts A.C. into D.C.
a) Motor generator
b) Engine generator
c) Rectifier
d) All of these

Taper tap is the tap in whichthreads are chamfered on the lower side.
a) 8 to 10 b) 3 to 5
c) 20 to 25d) None of these

The tool which gives support to the rivet head, is-
a)Lolly
b) Trolley
c) Dolly
d) None of these

Which of the following is mounted in order to support nut, bolt, screw, etc.?a) Keyb) Couplingc) Washer
d) None of these

Which of the following is not a foundation bolt?
a)Eye foundation bolt
b) Rag bolt
c) Lewis bolt
d) Cheese head bolt

Which of the following is a part of preventive maintenance?
a) Lubrication
b) Inspection
c) Servicing
d) All of these

Which of the following error occurs in an unused machine?
a) Depletion
b) Corrosion
c) Jamming
d) All of these

Dial test indicator is a precision instrument, which is used for measuring...........
a)The size of job
b) The parallelism and straightness of job
c) The height of job
d) None of these

Which metal is used in galvanization?
a)Tin
b) Zinc
c) Lead
d) None of these

The color of the walls of welding booth is............
a) Redb) Green c) Yellowd) Black
Transformer, by which voltage gets down and current gets high is known as..........
a)Step- up transformer
b)Step — down transformer
c) Both (a) & (b)
d) None of these